XpTools

• XUnit test framework - see DownLoad
• TestTesting
• TheNose
• RefactoringTools?/RefactoringNoses
• Ant (AutomatedBuild?)
• Jalopy (automated CodeFormatting?)
• CheckStyle? (automated CodingStandards? checker)
• IDE, eg IbmEclipse
• IntelliJ? IDEA (www.intellij.com) - many refactorings, more being added apace.

• OliBye thinks www.thesmallworlds.com/products/index.html looks interesting
  • DarrenH had a go with this, it drew some pretty pictures (but was a bit slow on my twin 866 1Gb RAM machine) but once the novelty wears off I fear it will become ShelfWare?, at least for me).